Any one can give suggestion...one of my wordpress blog is there and I got 4 PR nw so how can I promote that blog to earn money through that blog what to do for that? I don't no anything how to start for it..
there are many ways to make money from your site. you can sigh up with a contextual ad program like adsense and get paid for each visitor clicks. or if you have a niche where affiliate or CPA programs can be a good fit, you can use those programs as well. hard to tell which would be better without knowing your site/niche and traffic.